– For discrete graphics, Apple had previously offered the AMD Radeon HD 6490M with 256MB of memory on the low-end configuration and the Radeon HD 6750M with 1GB of memory on the high-end configuration. Apple has now moved the 6750M to the low-end configuration with 512 MB of memory and given the high-end configuration a Radeon HD 6770M with 1 GB of memory.

– The previous build-to-order option of a 500 GB hard drive running at 7200 rpm has been bumped to a 750 GB drive at the same speed.

17-inch MacBook Pro:

– Processor speeds have been bumped from a base 2.2 GHz Intel Core i7 with a 2.3 GHz upgrade option to a 2.4 GHz base processor with a 2.5 GHz option.

– Graphics have been improved from the AMD Radeon 6750M with 1 GB of memory to the Radeon HD 6770M, also with 1 GB of memory.

– The previous build-to-order option of a 500 GB hard drive running at 7200 rpm has been bumped to a 750 GB drive at the same speed.